title: [Changes in the production of IgM in response to pokeweed mitogen in juvenile rheumatoid arthritis. Correlations with disease activity].
abstract: Unstimulated and pokeweed mitogen (PWM)-stimulated "in vitro" IgM synthesis by peripheral blood lymphocytes has been evaluated by an ELISA method in 33 patients with juvenile rheumatoid arthritis (JRA). Lymphocyte PWM responses were significantly reduced in patients with JRA compared with healthy controls. When patients were divided according to disease activity, a significant increase of stimulation index (ratio of IgM synthesis with over that without PWM) has been observed in patients with disease remission compared with those with active disease. These findings confirm the defect in PWM-induced IgM synthesis by peripheral blood lymphocytes of patients with JRA and suggest that these abnormalities may be related to disease activity.
authors.affiliation: Clinica Pediatrica, Università di Pavia.
authors.forename: M
authors.initials: M
authors.lastname: Massa
authors.forename: M
authors.initials: M
authors.lastname: De Amici
authors.forename: A
authors.initials: A
authors.lastname: Ravelli
authors.forename: S
authors.initials: S
authors.lastname: Albani
authors.forename: S
authors.initials: S
authors.lastname: Viola
authors.forename: F
authors.initials: F
authors.lastname: De Benedetti
authors.forename: M C
authors.initials: MC
authors.lastname: Giaccari
authors.forename: A
authors.initials: A
authors.lastname: Martini
mesh_terms: D000293:Adolescent; D001171:Arthritis, Juvenile / Q000276:immunology*; D002648:Child; D002675:Child, Preschool; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D007075:Immunoglobulin M / Q000032:analysis / Q000096:biosynthesis*; D007223:Infant; D008214:Lymphocytes / Q000276:immunology*; D008297:Male; D011043:Pokeweed Mitogens / Q000494:pharmacology*
chemical_list: D007075:Immunoglobulin M; D011043:Pokeweed Mitogens
vernacular_title: Alterazioni della produzione di IgM in risposta al pokeweed mitogen nell'artrite reumatoide giovanile. Correlazioni con l'attività della malattia.